CN101594368B - Inquiry transferring method used for VPN - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
- H04L12/4675—Dynamic sharing of VLAN information amongst network nodes
- H04L12/4679—Arrangements for the registration or de-registration of VLAN attribute values, e.g. VLAN identifiers, port VLAN membership
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/64—Hybrid switching systems
- H04L12/6418—Hybrid transport
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1063—Application servers providing network services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1069—Session establishment or de-establishment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1096—Supplementary features, e.g. call forwarding or call holding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1101—Session protocols
- H04L65/1104—Session initiation protocol [SIP]
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Abstract
In order to realize a calling inquiry transferring method used for VPN based on a broadband SIP protocol, the invention provides a calling inquiry transferring method used for a broadband simulated special network VPN. The method comprises the following steps that: a first user initiates transferring Refer request to an application server of a first network; the application server of the first network processes the Refer and response thereof, Notify and response thereof; an application server of a second network where a second user is positioned transmits media information of a third user to the second user; the media information of the second user is transmitted to the third user; and communication is established between the second user and the third user. In addition, the invention also provides a calling inquiry transferring system used for the broadband VPN. Through the method and the system, the communication transfer of the third party is realized in a mode that the user can initiate the Refer request on the broadband VPN based on the SIP protocol.
Description
Technical field
The present invention relates to a kind of inquiry transferring method, particularly, relate to IMS (IPMultimedia System, the IP multimedia system) in network, based on SIP (Session Initialization Protocol, session initiation protocol) AS of agreement (Application Server, application server) realizes being used for the inquiry transferring method of VPN (Virtual Private Network, Virtual Private Network).
Background technology
Along with the expansion of socioeconomic development, scope of the enterprise, communication exchange and for important, particularly to trans-regional group easily between enterprise or group internal.Vpn service is Cargo Oriented on Group user's business, it distributes a cornet for each member in group, corresponding each member's of each cornet actual communication number (being trombone), call out mutually by cornet between the group internal member and to enjoy rate preferential, be very easy to the interchange between group user.Present vpn service is substantially all developed on narrowband network, extensive use along with IP network and Internet, based on the Broadband VPN business of SIP (Session Initialization Protocol, session initiation protocol) agreement because its diversity, flexibility, amalgamation will be developed greatly and use.Yet, do not have at present the calling inquiry transferring method that can be used for VPN based on the broadband Session Initiation Protocol, so that conversation is transferred on the another one user.
Summary of the invention
The objective of the invention is, realize a kind of calling inquiry transferring method that is used for VPN based on the broadband Session Initiation Protocol, enrich the function of vpn service.
For achieving the above object, the present invention proposes a kind of calling inquiry transferring method for the broadband virtual private network, comprise the following steps: initiate transfer-request by first user to the application server of the first network at place; In response to transfer-request, transmit the 3rd user's media information via the application server of the second network at the second user place to this second user; Described the second user's media information is sent to described the 3rd user; And set up between described the second user and described the 3rd user and converse;
Wherein, the step of described initiation transfer-request comprises:
Service call conversation control function module S-CSCF via described first network is sent to described transfer-request the application server of first network;
The application server of described first network obtains described transfer-request, when the communication number of the 3rd user in being included in described transfer-request is cornet, obtain the trombone corresponding with described cornet by Query Database, and described transfer-request is routed to the described S-CSCF of described first network;
The described transfer-request of being initiated by the application server of first network is sent to fixed network analog service PSS module by the described S-CSCF of described first network;
Via the application server of the S-CSCF of described first network and described first network, the response of described PSS module is back to first user;
Wherein, described PSS module be used for to receive the transfer-request that the S-CSCF via described first network transmits, and is used for and produce invitation from information to described the second user that make described the 3rd user transmit.
In addition, before described application server to first network is initiated the step of transfer-request, further comprising the steps: set up conversation between first user and described the second user; Described first user is called out maintenance to described the second user, and described the 3rd user is made a call.
In addition, set up the step of conversation between described the second user and described the 3rd user after, further comprising the steps: as to end the conversation between described first user and described the 3rd user; And end conversation between described first user and described the second user.
For achieving the above object, the invention allows for a kind of calling inquiry transferring system for the broadband virtual private network, comprising: the S-CSCF of first network, be connected to first user, be used for forwarding the transfer-request that described first user is initiated; The application server of first network is connected to the S-CSCF of described first network, is used for receiving and responds described transfer-request from the S-CSCF of described first network; The S-CSCF of second network is connected to the second user and the 3rd user; And the application server of second network, be connected to the S-CSCF of described second network, coordinate with the S-CSCF of second network, with based on the response to described transfer-request of the application server of described first network, described the 3rd user's media information and described the second user's media information are exchanged, set up session between described the second user and described the 3rd user.
The calling inquiry transferring system that is used for the broadband virtual private network also comprises: when described the 3rd user's number was cornet, the application server of described first network was further used for obtaining the trombone corresponding with described cornet by Query Database.
By the present invention, the user is by to talking with interior Refer and the processing such as corresponding and by application server is set in network, makes and realize calling out inquiry transferring in Broadband VPN.That is to say, the user can realize to third-party conversation switching in the mode of initiating the Refer request on based on the Broadband VPN of Session Initiation Protocol.The technology that the present invention discloses has solved the switching problem with VPN function based on Session Initiation Protocol, has enriched the function of vpn service.
Description of drawings
Below described accompanying drawing be used to provide a further understanding of the present invention, consist of the application's a part, exemplary embodiment of the present invention and explanation thereof are used for explaining the present invention, do not consist of limitation of the invention.In the accompanying drawings:
Fig. 1 is according to system architecture figure of the present invention;
Fig. 2 calls out the flow chart of VPN user B according to VPN user A of the present invention;
Fig. 3 is the flow chart that VPN user A of the present invention calls out non-VPN user B;
Fig. 4 is the flow chart that the non-VPN user A of the present invention calls out VPN user B;
After Fig. 5 is VPN user A, B conversation, the flow chart of A switching VPN user C.
Wherein, I-CSCF (inquiry CSCF), P-CSCF (proxy CSCF) network element have all been saved in above-mentioned each figure.
Embodiment
The present invention realizes by AS (Application Server, application server).AS provides the vpn service logic, carries out user's cornet to the interior Refer of conversion, dialogue of trombone and the association transmission of response, Notify and response thereof thereof etc.The user will be at S-CSCF (Serving-Call Session Control Function, serving CSCF) upper signing vpn service, the user that need to transfer also will be at the upper signing call switching business of PSS (PSTN/ISDN Simulation Services).
At first, VPN user A dials VPN user B.The S-CSCF of caller network is triggered to the calling of A the AS of caller network, if A dials is the cornet of B, the AS of caller network inquires about in database, obtains the trombone of B; The AS of caller network uses the trombone initiation of B to party B-subscriber's calling, calling is routed to the S-CSCF of called network, due to party B-subscriber's vpn service of also having contracted, the S-CSCF of called network is triggered to calling the AS of called network, the AS of called network initiates the calling to user B again, called B ring, reply, A, B media information are consulted to complete, and set up conversation.Here, media information comprises network terminal slogan, IP address, audio/video selection, coded system etc.It is the mutual process of transmitting and confirm media information between the user of Calling Side and callee side that media information is consulted.
After A, B conversation, user A determines conversation is transferred, and namely allows party B-subscriber and VPN user C set up conversation, and oneself withdraws from.The party A-subscriber calls out maintenance to the party B-subscriber, simultaneously C user is initiated new calling, after A, C media information are consulted to complete, carries out B, the negotiation of C media information, and B, C set up conversation.
In said process, for the dialogue between AB, the dialogue that caller network S-CSCF incoming call AS sets up is designated as dialoglAB, the AS dialogue that S-CSCF sets up of breathing out is designated as dialog2AB, the dialogue that called network S-CSCF incoming call AS sets up is designated as dialog3AB, and the AS dialogue that S-CSCF sets up of breathing out is designated as dialog4AB; For the dialogue between AC, the dialogue that caller network S-CSCF incoming call AS sets up is designated as dialog1AC, the AS dialogue that S-CSCF sets up of breathing out is designated as dialog2AC, the dialogue that called network S-CSCF incoming call AS sets up is designated as dialog3AC, and the AS dialogue that S-CSCF sets up of breathing out is designated as dialog4AC.
Set up conversation between B, C in order to allow, A withdraws from.The party A-subscriber initiates switching Refer request in the dialog1AB dialogue, carry dialog1AC in the Replaces of Refer-To head parameter.AS obtains dialog1AC after receiving Refer message, and initiates the Refer request in the dialog2AB dialogue, carries dialog2AC in the Replaces of Refer-To head parameter.After PSS receives Refer, return the 202Refer response, A is sent out the Notify request to A, AS receives 202Refer and Notify request in the dialog2AB dialogue, returns the 202Refer response in the dialog1AB dialogue, sends out the Notify request, is routed to A; Simultaneously AS receives in the dialog3AC dialogue that PSS initiates is not with SDP (SessioB Description Protocol, Session Description Protocol) reinvite of information, AS in dialog4AC dialogue initiation not with the reinvite of SDP information, after being routed to C, C returns 200reinvite, with the SDP information of upper C; When AS receives the 200reinvite of C in the dialog4AC dialogue, return 200reinvite, the SDP information of carrying C in the dialog3AC dialogue; When this 200reinvite that carries C user SDP information reaches PSS, PSS initiates reinvite, carry the SDP information of C, this reinvite is routed in the dialog3AB dialogue of AS, and AS initiates reinvite in the dialog4AB dialogue, carry the SDP information of C, be routed to the party B-subscriber, the party B-subscriber returns 200reinvite, with the SDP information of upper B, this is with 200reinvite process PSS, the CSCF of user B media information and the forwarding of AS, and the SDP information of B brings C user with ACK the most at last.The party B-subscriber is returning 200reinvite, and when being routed to PSS, PSS can initiate Notify and notify the party A-subscriber, and the party B-subscriber replys, initiates BYE simultaneously in A, C dialogue, discharges the party A-subscriber, and then the party A-subscriber initiates BYE, discharges the dialogue with B.So far, the party A-subscriber completes the call diversion function, and the dialogue of setting up with B before is transferred on C, allows B, C set up conversation, and oneself withdraws from.
The following describes according to exemplary embodiment of the present invention.
Fig. 1 is according to system architecture diagram of the present invention.The user is signing vpn service on CSCF, wishes to have the user of signaling transfer point at the upper signing call switching business of PSS (PSTN/ISDN Simulation Service, fixed network analog service).AS preserves user's long and short corresponding informance in database.
Fig. 2 is the flow chart that VPN user A of the present invention dials VPN user B:
1. user A makes a call, and carries the media information SDPA of oneself, when being routed to the S-CSCF of caller network, finds this user vpn service of having contracted, and the S-CSCF of caller network is triggered to calling the AS of caller network;
2. if what A dialed is the cornet of B, AS is transformed into the trombone of B with it; If the A incoming call is the trombone of B, AS is without conversion.AS sends out Invite with the trombone of B to the S-CSCF of caller network, carries SDPA;
3. the S-CSCF of caller network is triggered to calling the PSS of caller network;
4. the PSS of caller network will call out the S-CSCF that is triggered to again the caller network;
5. the S-CSCF of caller network routes the call to the S-CSCF of called network, carries the media SDPA of A;
6. the S-CSCF of called network is triggered to calling the PSS of called network;
7. the S-CSCF of called network will call out the S-CSCF that is triggered to again called network;
8. the S-CSCF of called network finds the called vpn service of also having contracted, and calling is triggered to the AS of called network;
The AS of 9～10. called networks will call out by CSCF and be routed to called B;
11. the called tinkling of pieces of jade that shakes returns 180;
12.180 be routed to the AS of called network;
13. the AS of called network, S-CSCF, PSS, after the S-CSCF of caller network, PSS, AS carry out route processing to 180, this 180 final calling subscriber A that arrives;
14. the S-CSCF of calling subscriber A, caller network, PSS, AS, the Prack/200prack of the S-CSCF of called network, PSS, AS;
15. called subscriber B off-hook is replied, and returns the 200Invite response, carries the media information SDPB of oneself.This 200Invite response finally is routed to calling subscriber A;
16. the S-CSCF of calling subscriber A, caller network, PSS, AS, the ACK of the S-CSCF of called network, PSS, AS.
So far, VPN user A and VPN user B set up conversation.
Fig. 3 is the flow chart that VPN user dials non-VPN user.The call flow of Calling Side is with the call flow of Calling Side in Fig. 2; Due to called be not VPN user, so the calling of callee side is without AS;
Fig. 4 is the flow chart that non-VPN user dials VPN user.Because the calling subscriber is not VPN user, so the calling of Calling Side is without AS; The call flow of callee side is with the call flow of callee side in Fig. 2.
Below, after Fig. 5 set up calling with VPN user A and VPN user B, the flow process that the A initiation is transferred to VPN user C illustrated switching process.
At first, A can send out Re-Invite to B, carries the SDP of sendonly direction, and B replys with 200Re-Invite, carries the SDP of recvonly direction, and after media information was consulted successfully, B was held; A as the flow process of exhaling B in Fig. 2, goes to call out C user simultaneously, and after C replied, A, C set up conversation.
Then, A initiates the Refer request in dialogue, as Fig. 5, B, C is connected, and oneself withdraws from, and completes switch over operation.
1.A initiate the Refer request, this request is routed to the AS of caller network, AS receives this request in the dialod1AB dialogue.Carry the number information of C in the Refer-To head of Refer request, carry the dialog information of dialog1AC in the Replaces parameter, indicate conversation between B, C is transferred in the conversation of A, B;
2.AS after receiving this Refer request, if the number of the C that carries in the Refer-To head is cornet, convert it into trombone; Obtain the dialog1AC dialogue from the Replaces parameter, obtain its related dialogue dialog2AC according to dialog1AC, initiate Rerfer again in the association dialogue dialod2AB of dialod1AB, the Refer-To head carries the trombone of C, and the Replaces parameter is carried the dialog2AC dialog information;
3 these Refer requests are routed to PSS by the S-CSCF of caller network;
4.PSS return 202Refer;
5.S-CSCF 202Refer is routed to AS, and AS receives this response in the dialog2AB dialogue;
6.AS return the 202Refer response in the association dialogue dialog1AB of dialog2AB dialogue, this responds by final route to A;
7. the PSS of caller network sends out Notify in A, B dialogue, and message body is 100trying, and the expression switching is processed;
The PSS of 8～9. caller networks initiates Re-Invite in A, C dialogue, this Re-Invite is routed to the S-CSCF of called network;
After the Notify of 10～14. caller network PSS reached AS, AS received this Notify in the dialog2AB dialogue, initiated Notify in the association dialogue dialog1AB of dialog2AB dialogue, and message body is 100trying, and this Notify finally is routed to A; A returns the 200Notify response, and this response is routed to AS, and AS receives this response in dialog1AB, sends out the 200Notify response in the association dialogue dialog2AB of dialog1AB, and this response finally is routed to PSS;
The Re-Invite that 15～24.PSS initiates in A, C dialogue is routed to the AS of called network, and AS receives this Re-Invite in the dialog3AC dialogue, initiates Re-Invite in the association dialogue dialog4AC of dialog3AC, is arrived C by final route; C returns 200Re-Invite response, the media SDPC after carrying it and upgrading, and this 200Re-Invite response is by the PSS of final route to the caller network;
The PSS of 25～26. caller networks initiates Re-Invite in A, B dialogue, carry the media information SDPC of C, and this Re-Invite is routed to the S-CSCF of called network;
27. this Re-Invite that carries SDPC through PSS, the AS of called network, S-CSCF after, by final route to B;
28～29.B returns 200Re-Invite, carries the media SDPB after renewal, after the S-CSCF route of this 200Re-Invite through S-CSCF, PSS, AS and the caller network of called network, finally arrives the PSS of caller network;
The PSS of 30～31. caller networks sends out ACK in A, C dialogue, carry the media information SDPB of B, after the S-CSCF of this ACK process caller network, S-CSCF, the PSS of called network, AS, finally arrives C.B, C complete media information and consult, and converse;
The PSS of 32～33. caller networks sends out Notify in A, B dialogue, message body is 200OK, and expression is transferred successfully, is arrived A with 10～14 these Notify by final route, and A returns the 200Notify response, by the PSS of final route to the caller network;
The PSS of 34～37 caller networks initiates Bye in A, C dialogue, and when this Bye was routed to AS, AS received in dialog2AC, returns 200Bye, initiates Bye in the association dialogue dialog1AC of dialog2AC, is arrived A by final route; A returns 200Bye, is routed to AS.So far, the dialogue of A and C foundation is released;
38～39.A initiates Bye in A, B dialogue, when being routed to AS, AS receives this Bye request in dialog1AB, return 200Bye, initiates Bye in the association dialogue dialog2AB of dialog1AB, by the PSS of final route to the caller network; PSS returns 200Bye, is routed to AS.So far, the dialogue of A and B foundation is released.
Fig. 5 has only drawn the flow process of calling subscriber A initiation switching.The transfer service if called subscriber B has contracted, B also can initiate switching, and first A is kept, then call out C, the flow process of similar Fig. 5 then, B initiates Refet, A, C connection the most at last, oneself withdraws from.
This paper has only described the switching flow process when A, B, C are VPN user.If A is VPN user, no matter whether B, C are VPN users, A initiates similar Fig. 5 of flow process of switching, through the AS of caller network, process Refer and response, Notify and response thereof; If B is VPN user, no matter A, whether C is VPN user, and B initiates similar Fig. 5 of flow process of switching, through the AS of called network, process Refer and response, Notify and response thereof.
The above is only the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a calling inquiry transferring method that is used for the broadband virtual private network, is characterized in that, comprises the following steps:
Initiate transfer-request by first user to the application server of the first network at place;
In response to described transfer-request, transmit the 3rd user's media information via the application server of the second network at the second user place to this second user;
Described the second user's media information is sent to described the 3rd user;
Set up conversation between described the second user and described the 3rd user;
Wherein, the step of described initiation transfer-request comprises: the service call conversation control function module S-CSCF via described first network is sent to described transfer-request the application server of first network;
The application server of described first network obtains described transfer-request, when the communication number of the 3rd user in being included in described transfer-request is cornet, obtain the trombone corresponding with described cornet by Query Database, and described transfer-request is routed to the described S-CSCF of described first network;
The described transfer-request of being initiated by the application server of first network is sent to fixed network analog service PSS module by the described S-CSCF of described first network;
Via the application server of the S-CSCF of described first network and described first network, the response of described PSS module is back to first user;
Wherein, described PSS module be used for to receive the transfer-request that the S-CSCF via described first network transmits, and is used for and produce invitation from information to described the second user that make described the 3rd user transmit.
2. method according to claim 1, is characterized in that, and is before described application server to first network is initiated the step of transfer-request, further comprising the steps:
Set up conversation between first user and described the second user;
Described first user is called out maintenance to described the second user, and described the 3rd user is made a call.
3. method according to claim 2, is characterized in that, the described step of setting up conversation between first user and described the second user comprises:
The calling of described first user is toggled to the application server of described first network;
When described the second user's communication number is cornet, obtain trombone corresponding to described cornet by Query Database;
S-CSCF via described second network will use the calling of described trombone initiation to be sent to the application server of described second network; And
Application server via described second network transmits described the second user's media information to described first user, and the media information of described first user is sent to described the second user, to set up the conversation between described first user and described the second user.
4. the described method of any one according to claim 1 to 3, is characterized in that, and is set up the step of conversation between described the second user and described the 3rd user after, further comprising the steps:
End the conversation between described first user and described the 3rd user; And
End the conversation between described first user and described the second user.
5. method according to claim 4, is characterized in that, described first user is the calling subscriber, and described first network is the caller network, and described the second user is the called subscriber, and described second network is called network.
6. method according to claim 4, is characterized in that, described first user is the called subscriber, and described first network is called network, and described the second user is the calling subscriber, and described second network is the caller network.
7. a calling inquiry transferring system that is used for the broadband virtual private network, is characterized in that, comprising:
The service call conversation control function module S-CSCF of first network is connected to first user, is used for forwarding the transfer-request that described first user is initiated;
The application server of first network is connected to the S-CSCF of described first network, is used for receiving and responds described transfer-request from the S-CSCF of described first network;
The S-CSCF of second network is connected to the second user and the 3rd user; And
The application server of second network, be connected to the S-CSCF of described second network, coordinate with the S-CSCF of described second network, with based on the response to described transfer-request of the application server of described first network, described the 3rd user's media information and described the second user's media information are exchanged, set up session between described the second user and described the 3rd user;
The PSS module is connected to the S-CSCF of described first network, is used for receiving the transfer-request that the S-CSCF via described first network transmits, and is used for and produce invitation from information to described the second user that make described the 3rd user transmit.
8. system according to claim 7, is characterized in that, also comprises:
When described the 3rd user's number was cornet, the application server of described first network was further used for obtaining the trombone corresponding with described cornet by Query Database.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910149043.5A CN101594368B (en) | 2009-06-15 | 2009-06-15 | Inquiry transferring method used for VPN |
| EP10788747.3A EP2445163A4 (en) | 2009-06-15 | 2010-05-11 | Call inquiry transfer method and system for virtual private network (vpn) |
| PCT/CN2010/072618 WO2010145351A1 (en) | 2009-06-15 | 2010-05-11 | Call inquiry transfer method and system for virtual private network (vpn) |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910149043.5A CN101594368B (en) | 2009-06-15 | 2009-06-15 | Inquiry transferring method used for VPN |
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| CN101594368A CN101594368A (en) | 2009-12-02 |
| CN101594368B true CN101594368B (en) | 2013-06-05 |
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| CN200910149043.5A Active CN101594368B (en) | 2009-06-15 | 2009-06-15 | Inquiry transferring method used for VPN |
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| EP (1) | EP2445163A4 (en) |
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| CN101594368B (en) * | 2009-06-15 | 2013-06-05 | 中兴通讯股份有限公司 | Inquiry transferring method used for VPN |
| CN108270725B (en) * | 2016-12-30 | 2021-10-01 | 中兴通讯股份有限公司 | A kind of SIP terminal transfer method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1498490A (en) * | 2001-12-19 | 2004-05-19 | ���µ�����ҵ��ʽ���� | switching system |
| CN101217600A (en) * | 2007-01-05 | 2008-07-09 | 中兴通讯股份有限公司 | A method and device of inquiring transferring operations |
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|---|---|---|---|---|
| JP3014366B2 (en) * | 1998-08-12 | 2000-02-28 | 日本電信電話株式会社 | Internet telephone communication method and apparatus, and recording medium storing the program |
| US6934279B1 (en) * | 2000-03-13 | 2005-08-23 | Nortel Networks Limited | Controlling voice communications over a data network |
| WO2007062609A1 (en) * | 2005-12-03 | 2007-06-07 | Huawei Technologies Co., Ltd. | A method, a application server and a system for implementing the third party control service |
| DK1994708T3 (en) * | 2006-03-14 | 2013-08-12 | Ericsson Telefon Ab L M | ROUTING MESSAGES IN IP MULTIMEDIA SUBSYSTEM |
| US8243715B2 (en) * | 2006-05-15 | 2012-08-14 | Oracle Israel Ltd. | Delivering sip-based call services to circuit-switched terminals |
| WO2008095536A1 (en) * | 2007-02-08 | 2008-08-14 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for use in a communications network |
| CN101594368B (en) * | 2009-06-15 | 2013-06-05 | 中兴通讯股份有限公司 | Inquiry transferring method used for VPN |
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- 2009-06-15 CN CN200910149043.5A patent/CN101594368B/en active Active
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2010
- 2010-05-11 WO PCT/CN2010/072618 patent/WO2010145351A1/en active Application Filing
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1498490A (en) * | 2001-12-19 | 2004-05-19 | ���µ�����ҵ��ʽ���� | switching system |
| CN101217600A (en) * | 2007-01-05 | 2008-07-09 | 中兴通讯股份有限公司 | A method and device of inquiring transferring operations |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2000-59471A 2000.02.25 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101594368A (en) | 2009-12-02 |
| WO2010145351A1 (en) | 2010-12-23 |
| EP2445163A4 (en) | 2013-10-16 |
| EP2445163A1 (en) | 2012-04-25 |
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